Spatial Differences of Trace Elements in Tea Garden Soils from Different Parent Materials in the Main Tea Producing Areas of Guizhou

Abstract

In order to explore the content characteristics of iron, manganese, copper, and zinc in the soil of tea gardens with different parent materials, this study took several major tea producing areas in Guizhou Province as the research object, and selected three parent materials of old weathering crust, sand shale and quartz sandstone. The characteristics of the total and available content of Fe, Mn, Cu, and Zn in the soil and their profile distribution were analyzed. The results show that the content of iron, copper and zinc in the soil has a very significant negative correlation with the soil sand content, and a very significant positive correlation with the clay content. Shale > quartz sandstone; manganese content is significantly positively correlated with silt content, on average, sand shale > old weathered crust > quartz sandstone on soils developed from different parent materials. In soils developed from different parent materials, there is little difference in the average content of available iron; the average content of available Mn is sand shale > old weathered crust > quartz sandstone; the average effective Cu content of sand shale is greater than that of old weathered crust and quartz sandstone; the average Zn content in sand shale and quartz sandstone is greater than that in old weathering crust. The available Fe, Mn, Cu and Zn in the soil were all at the medium level or above, and the content was relatively abundant in the soil.